efficient object creation

[Guest]

Activator.CreateInstance vs. CunstructorInfo.Invoke

- If I may use either of them, which one is more efficient?
- When is one preferred to the other?

Thank you.

 

[Mattias Sjögren]

Activator.CreateInstance vs. CunstructorInfo.Invoke

- If I may use either of them, which one is more efficient?
- When is one preferred to the other?

I'm too lazy to look it up right now, but IIRC what
Activator.CreateInstance does is to look up the appropriate
constructor and call Invoke on it.

So if you're going to create multiple objects or if you already have
the ConstructorInfo object, it's probably faster to manually Invoke
that (no need to look up the same constructor again). But if it's a
one time thing and you don't have a ConstructorInfo object I don't
think it matters much which one you choose.


Mattias